Sole



FIG. 1 is a front side perspective view of a sole showing the claimed design;

FIG. 2 is a rear side perspective view thereof; and,

FIG. 3 is a side view thereof.

The dashed broken lines in the figures show portions of the sole that form no part of the claimed design.

The dot-dash broken lines in the figures show boundaries that form no part of the claimed design. 

CLAIM The ornamental design for a sole, as shown and described. 